Finding the Fourth Proportional to 1,444.56, 1,993.68 and 885.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,444.56 : 1,993.68 = 885.12 : x
2. Step 2: Convert to fraction form
   1,444.56/1,993.68 = 885.12/x
3. Step 3: Cross multiply
   1,444.56x = 1,993.68 × 885.12
4. Step 4: Simplify right side
   1,444.56x = 1,764,646.04
5. Step 5: Solve for x
   x = 1,764,646.04/1,444.56
6. Step 6: Final answer
   x = 1,221.58